DragonFly bugs List (threaded) for 2008-01
[
Date Prev][
Date Next]
[
Thread Prev][
Thread Next]
[
Date Index][
Thread Index]
[issue869] SMP Panic: no local apic
Michael Neumann <mneumann@ntecs.de> added the comment:
Same problem on my laptop (HP Compaq 6710b, Core 2 Duo). I browsed through the
mp_machdep.c code and noticed that it has nothing to do with not finding the
local apic. The CPU itself is not detected as MP capable in mp_probe().
mptable_pass1() is never called in this situation, which leads to the wrong
panic ("no local apic").
Please change in platform/pc32/i386/machdep.c in function getmemsize() the line:
mp_probe();
to
if (mp_probe() == 0)
{
panic("CPU not detected as MP capable");
}
This will give you a more appropriate error message, nothing more.
The whole problem arises because search_for_sig don't find a "_MP_" signature in
memory. The relevant changes were introduced in FreeBSD in version 1.220 of
mp_machdep.c:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/mp_machdep.c?r=1.220
_____________________________________________________
DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<https://bugs.dragonflybsd.org/issue869>
_____________________________________________________
[
Date Prev][
Date Next]
[
Thread Prev][
Thread Next]
[
Date Index][
Thread Index]